CVE-2026-45897
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_counter: serialize reset with spinlock
Add a global static spinlock to serialize counter fetch+reset operations, preventing concurrent dump-and-reset from underrunning values.
The lock is taken before fetching the total so that two parallel resets cannot both read the same counter values and then both subtract them.
A global lock is used for simplicity since resets are infrequent. If this becomes a bottleneck, it can be replaced with a per-net lock later.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3cb03edb4de33fd04c4ea55f47397b96a8657c53 < 0cdc6d5a26f2d1f7f15a43526841b679445c32e2 | affected |
| Linux | Linux | 3cb03edb4de33fd04c4ea55f47397b96a8657c53 < 779c60a5190c42689534172f4b49e927c9959e4e | affected |
| Linux | Linux | fb1adb05ea87b6149e65a31e511756c4f470d0cd | affected |
| Linux | Linux | f123293db16dcd0cd81b246ae60e6362f0025d0a | affected |
| Linux | Linux | 6.1.107 < 6.2 | affected |
| Linux | Linux | 6.6.48 < 6.7 | affected |
| Linux | Linux | 6.7 | affected |
| Linux | Linux | 0 < 6.7 | unaffected |
| Linux | Linux | 6.19.4 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/0cdc6d5a26f2d1f7f15a43526841b679445c32e2
- https://git.kernel.org/stable/c/779c60a5190c42689534172f4b49e927c9959e4e
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